. Author manuscript; available in PMC: 2022 Nov 21.

Published in final edited form as: Psychol Aging. 2022 May 16;37(4):441–455. doi: 10.1037/pag0000690

Table 3.

Mean drift rate values across participants from the one-choice and two-choice diffusion models

Task-version	Age	v₁	v₂	v₃	v₄	V
One-choice Clear	Young					0.866
	Older					0.691

Two-choice Clear	Young	0.296	0.117	−0.212	−0.383	0.252
	Older	0.244	0.083	−0.143	−0.325	0.199

Two-choice City	Young	0.323	0.139	−0.128	−0.353	0.236
Two-choice City	Older	0.245	0.084	−0.067	−0.198	0.148

Note: v₁, v₂ are for bright stimuli (.57 and .53 white pixels respectively) and v₃, v₄ are for dark stimuli (.47 and .43 white pixels respectively); V represents the overall drift rate. For the two-choice driving task it is (v₁+v₂−v₃−v₄)/4.